Here's the thing about potatoes. You plant them, and cover them with dirt, then pray like mad for rain. With most crops, you can see what you're going to eat—the fruit of your labors, so to speak. But potatoes incubate in the ground, silent and mostly unseen, while you hope for harvest. Only a farmer-turned-evangelist would know how apt a metaphor potatoes are for a life of faith in Christ Jesus, making Faith Like Potatoes the perfect title for a biopic based on the true story of Angus Buchan.

Angus (Frank Rautenbach), a Scotsman born in Africa, leaves his farm in Zambia due to poor yield and escalating violence. His fiery temper ensures that he burns bridges, thanks to his penchant for escalating petty disputes into full-fledged fistfights. With three children and pregnant wife Jill (Jeanne Wilhelm), Angus buys a plot of land in South Africa and builds a life out of nothing.

"God will give us a farm," says Jill, as she sets up house in the one-room trailer she names Shalom. Angus just snorts. He doesn't believe in anything but the toil of his own hands, as he wrests crops from the earth and slathers mud on the walls of the shack his large family will soon call home. Angus was born to work, but that work is driving him to an early grave.

As Angus's farm grows, so does his workload—and so does his anger. He flies off the handle at a moment's notice. Jill suggests anxiety medication, but deep down Angus knows that his rage is a spiritual, not biochemical, problem. When Jill manages to drag Angus kicking and screaming to church, he receives the shock of his life when the sermon leads him to give himself and his family to Christ.

Angus's pastor challenges him to tell three people what he's done, and in doing so Angus ...

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